Older adults with evidence of amyloid in the brain but no clinical symptoms of Alzheimer’s disease have structures in the brain that don’t communicate readily with each other, according to researchers at Washington University School of Medicine in St. Louis.
The findings, published in Biological Psychiatry, may be yet another indicator that Alzheimer’s damage to the brain begins to occur long before there are clinical symptoms of the disease.
Using brain-mapping techniques, first author Yvette I. Sheline, MD, and colleagues found that key brain structures don’t connect as efficiently in brains where positron emission tomography (PET) scans revealed the abnormal presence of the amyloid protein...